Novel chalcogenide glasses of pseudo-binary(100-x)Sb_(2)S_(3-x)CuI systems were synthesized by traditional meltquenching method.The glass-forming region of Sb_(2)S_(3)-CuI system was determined ranging from x=30 mol% ...Novel chalcogenide glasses of pseudo-binary(100-x)Sb_(2)S_(3-x)CuI systems were synthesized by traditional meltquenching method.The glass-forming region of Sb_(2)S_(3)-CuI system was determined ranging from x=30 mol% to 40 mol%.CuI acts as a non-bridging modifier to form appropriate amount of [SbSI] structural units for improving the glass-forming ability of Sb_(2)S_(3).Particularly,as-prepared glassy sample is able to transmit light beyond 14 μm,which is the wider transparency region than most sulfide glasses.Their physical properties,including Vickers hardness(Hv),density(ρ),and ionic conductivity(σ) were characterized and analyzed with the compositional-dependent Raman spectra.These experimental results would provide useful knowledge for the development of novel multi-spectral optical materials and glassy electrolytes.展开更多
The first palladium-catalyzed method for the arylation of α-phosphonovinyl nonaflates is described. Using a catalyst comprised of Pd（OAc）2 and SPhos, terminal and internal α-aryl vinylphosphonates could be efficie...The first palladium-catalyzed method for the arylation of α-phosphonovinyl nonaflates is described. Using a catalyst comprised of Pd（OAc）2 and SPhos, terminal and internal α-aryl vinylphosphonates could be efficiently ac- cessed under mild conditions. The reaction features a broad coupling partner scope and tolerates many functional groups.展开更多
基金Project partially supported by the National Key Research and Development Program of China(Grant Nos.2016YFB0303802 and 2016YFB0303803)the National Natural Science Foundation of China(Grant No.61775110)sponsored by K C Wong Magna Fund in Ningbo University。
文摘Novel chalcogenide glasses of pseudo-binary(100-x)Sb_(2)S_(3-x)CuI systems were synthesized by traditional meltquenching method.The glass-forming region of Sb_(2)S_(3)-CuI system was determined ranging from x=30 mol% to 40 mol%.CuI acts as a non-bridging modifier to form appropriate amount of [SbSI] structural units for improving the glass-forming ability of Sb_(2)S_(3).Particularly,as-prepared glassy sample is able to transmit light beyond 14 μm,which is the wider transparency region than most sulfide glasses.Their physical properties,including Vickers hardness(Hv),density(ρ),and ionic conductivity(σ) were characterized and analyzed with the compositional-dependent Raman spectra.These experimental results would provide useful knowledge for the development of novel multi-spectral optical materials and glassy electrolytes.
文摘The first palladium-catalyzed method for the arylation of α-phosphonovinyl nonaflates is described. Using a catalyst comprised of Pd（OAc）2 and SPhos, terminal and internal α-aryl vinylphosphonates could be efficiently ac- cessed under mild conditions. The reaction features a broad coupling partner scope and tolerates many functional groups.
